A basically concur with everyone who volunteers help!
Decreasing on the Purl side has always been a fussy thing for me. When I work the decrease the way I think it should be done, I immediately turn the work around to face me (RS) and take a look at what I just did. If I don't like it, I try Plan B.
I hate it when you can't get around doing decreases on the WS, the purl side. Bah!